I'm looking to have a injector drivers programmed into my factory ecu. Looking for sources.

 

I must tell you that this sounds like a waste of time and money, since an aftermarket EMS would be superior, and less expensive if you take into account R&D, labor, and profit margin. However, if there is still some reason you want to do this, the following have modified stock ECU's:

http://www.pocketlogger.com/

http://www.mostlymazda.com/

http://www.pettitracing.com/flash.htm

http://www.autothority.com/